/Engine/Source/Runtime/CoreUObject/Public/UObject/Class.h
Finds the common base class that parents the two classes passed in.
the common base class or NULL
static [UClass](API\Runtime\CoreUObject\UObject\UClass) * FindCommonBase ( [UClass](API\Runtime\CoreUObject\UObject\UClass) * InClassA, [UClass](API\Runtime\CoreUObject\UObject\UClass) * InClassB )